

//将字符串转换成utf-8编码
function EncodeUtf8(s1) {
	var s = escape(s1);
	var sa = s.split("%");
	var retV = "";
	if(sa[0] != "") {
		retV = sa[0];
	}
	for(var i = 1; i < sa.length; i++) {
		if(sa[i].substring(0, 1) == "u") {
			retV += Hex2Utf8(Str2Hex(sa[i].substring(1, 5)));

		} else retV += "%" + sa[i];
	}

	return retV;
}

function Str2Hex(s) {
	var c = "";
	var n;
	var ss = "0123456789ABCDEF";
	var digS = "";
	for(var i = 0; i < s.length; i++) {
		c = s.charAt(i);
		n = ss.indexOf(c);
		digS += Dec2Dig(eval(n));

	}
	//return value;
	return digS;
}

function Dec2Dig(n1) {
	var s = "";
	var n2 = 0;
	for(var i = 0; i < 4; i++) {
		n2 = Math.pow(2, 3 - i);
		if(n1 >= n2) {
			s += '1';
			n1 = n1 - n2;
		} else
			s += '0';

	}
	return s;

}

function Dig2Dec(s) {
	var retV = 0;
	if(s.length == 4) {
		for(var i = 0; i < 4; i++) {
			retV += eval(s.charAt(i)) * Math.pow(2, 3 - i);
		}
		return retV;
	}
	return -1;
}

function Hex2Utf8(s) {
	var retS = "";
	var tempS = "";
	var ss = "";
	if(s.length == 16) {
		tempS = "1110" + s.substring(0, 4);
		tempS += "10" + s.substring(4, 10);
		tempS += "10" + s.substring(10, 16);
		var sss = "0123456789ABCDEF";
		for(var i = 0; i < 3; i++) {
			retS += "%";
			ss = tempS.substring(i * 8, (eval(i) + 1) * 8);

			retS += sss.charAt(Dig2Dec(ss.substring(0, 4)));
			retS += sss.charAt(Dig2Dec(ss.substring(4, 8)));
		}
		return retS;
	}
	return "";
}